论文标题
校准高能暗物质搜索的氙锯齿的闪烁和电离响应
Calibrating the scintillation and ionization responses of xenon recoils for high-energy dark matter searches
论文作者
论文摘要
基于液体氙气的直接检测暗物质实验最近扩展了其搜索，包括有效的田间理论暗物质和非弹性暗物质相互作用模型所激发的高能核后坐力事件，但目前很少有XENON后坐力校准校准。在这项工作中，我们测量了高达426 keV的氙气后退的闪烁和电离产量。该实验使用14.1 MEV中子在紧凑的液体氙时间投影室中散射氙气，并在39 KeV和426 KeV之间产生准单调XENON后坐力。我们报告了最高306 KEV的后坐力响应及其电场依赖性；由于较低的事件统计数据和相对温和的场依赖性，报道了较高能量的产量值是电场之间的电场的平均电场响应的平均值。该结果将使基于氙气的暗物质实验能够通过包括由于缺乏校准而以前无法访问的能量区域来显着提高其高能暗物质敏感性。
Liquid xenon-based direct detection dark matter experiments have recently expanded their searches to include high-energy nuclear recoil events as motivated by effective field theory dark matter and inelastic dark matter interaction models, but few xenon recoil calibrations above 100 keV are currently available. In this work, we measured the scintillation and ionization yields of xenon recoils up to 426 keV. The experiment uses 14.1 MeV neutrons to scatter off xenon in a compact liquid xenon time projection chamber and produce quasi-monoenergetic xenon recoils between 39 keV and 426 keV. We report the xenon recoil responses and their electric field-dependence for recoil energies up to 306 keV; due to the low event statistics and the relatively mild field dependence, the yield values at higher energies are reported as the average of xenon responses for electric fields between 0.2-2.0 kV/cm. This result will enable xenon-based dark matter experiments to significantly increase their high energy dark matter sensitivities by including energy regions that were previously inaccessible due to lack of calibrations.
